Lime and cement kiln



B. F. HOLLAND, Lime and Cement Kiln.

No. 224,912. lemme@ Feb. 24. Isso. lfgl, en@ ma e7 e N UNITED STATES PATENT OEEICE.

BENJAMIN F. HOLLAND, OF UTIOA, ILLINOIS.

Limi-i AND CEMENT KILN.

SPECIFICATION forming part of Letters Patent No. 224,912, dated vFebruary 24, 1880.

Application filed January 5, 1880.

To all whom it may concern BeV it known that I, BENJAMIN F. HOL- LAND, of Utica, in the county of La Salle' and State of Illinois, have invented a new and valuable Improvement in Lime and Cement Kilns; and I do hereby declare that the following` is a full, clear, and exact description of 4the construction and operation ofthe same,

reference being had to the annexed drawings, making a part of this specification, and to the letters and` iigures of reference marked thereon. i

Figure l of the drawings is a representation of a perspective view of the kiln, and Fig. 2 is a vertical longitudinal section taken 011 line a' :i: of Fig. l. i The present invention has relation to lim and cement kilns.; and it consists inthe peculiar manner of constructing the kiln, whereby a more uniform draft is obtained and the rock burned more evenly with comparatively a small quantity of fuel, as will be hereinafter described, and subsequently pointed out in the claim.-

In the accompanying drawings, A represents the kiln, of any convenient size and shape, and may be composed of stone, brick, or iron, as found most desirable. The bottom of ithe kiln A is filled up on the inside to a greater height than on the outside, and is covered with lire-brick to form a smooth i surface to shovel from, also to prevent dampness from penetrating the rock after burning, and, also,

the air is prevented from penetrating the bottom, which would tend to consume the heat.

The kiln A, near its bottom, is provided with draft or re holes @,'regulated by suitable doors b, said holes running horizontally from the outside to the inside of the kiln. The kiln is also provided with holes c, passing down diagonallyT through the Walls thereof, and opening into the interior at the bottom of the kiln.

In using the kiln, suitable kindling is rst placed upon the bottom thereof, at the mouth of the fire or draftiholes a, also at the center of the kiln, upon the bottom, and in dif-` ferent directions. The kindling being thus placed upon the iioor or bottom of the kiln, the floor is next covered With coal, after which a layer of rock is placed thereon, and upon this a layer of coal, and then rock, and so on until the top of the kiln is reached, using less coal as the top is neared.

In filling the kiln suitable posts are first placed upon the door in a vertical or upright position and the coal and rock filled in around them, the posts being Withdrawn after the kiln is filled, thus leaving a hole or chimney. After the kiln is thus charged With kindling, coal, and rock, it is then ready for firing, which is accomplished by rst dropping fire down through the openings at the center of the kiln'forined by the vertical posts. The fire, passing down these openings, ignites the kindling at the bottom or loor of the kiln, and when the coal becomes thoroughly lighted I then light through the iire or draft holes a from the outside of the kiln. The kiln is nowl completely under Way, and the heat from the center thereof draws that from the outside over the bottom or floor. by the posts through the rock and coal at the center of the kiln are now filled up With fine coal and rock, thus compelling the kiln to obtain its draft through the main body of the rock and coal, after Which the top of the kiln is covered over with fine slack-coal, and is allowed to remain until it is burned out. When the kiln is ready to draw or empty the doors B are opened and the burned rock shoveled out.

The holes c, passing down diagonally through the Walls of the kiln, may also be used for ring when, it is desired to quicken the burning ofthe coal and rock.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

The lime or cement kiln A, having horizontal openings a near its bottom, and openings c through the vertical Walls of said kiln, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

BENJAMIN F. HOLLAND. Witnesses:

JAMES KroRDAN,

JOHN C. WALKER.

'Ihe holes formed 

